Puraclean Filter Spray 16 oz Bottle

I have been using Puraclean Filter Spray for the last ten years. This product is a must for those who have a Rheem/Ruud unit with the plastic reusable filter. After applying the filter spray you will now have a electrostastic filter capturing dust and allergen's that would most likely pass through this filter. Rheem/Ruud insists on the consumer using this filter which may be one reason for it's unusual size preventing standard filters from fitting. I once had a custom filter made only to have the unit make an annoying popping sound so it was back to the original. The filter spray will definitely do the trick plus makes cleaning the filter a breeze. Just simply hose off all the pollutants give it a good dry and reapply the spray. I like to give a mist on both sides and let it dry for a while before reinstalling it. This particular unit I have now is going on four years and the coil looks as good today as from the day it was installed.

I thought I'd try this filter spray on my MERV 6 rated furnace filters. These are open fiberglass filters but much better quality than the old style "blue fiberglass" ones. I like these for unrestricted airflow because I find the pleated filters too restrictive. Since I have 2 furnace filters in a large ceiling box, I sprayed a new one (1) of them liberally and paired it with a new unsprayed filter then waited 30 days. I expected to see some difference such as darker color which would suggest the sprayed filter had trapped more fine particles. After 30 days I could see no discernable differences even under magnification. I'll continue the testing but, as it stands now, I probably won't purchase again.